package main

import "fmt"

//常量声明

const  notFount=404


//批量声明
const(
	t1=10
	t2
	t3=20
)
// iota常量计数器
const(
	a1=iota
	a2
	_=iota
	a3
	a4
)

//定义数级
const(
		_=iota
		KB=1<<(iota*10) 
		MB=1<<(iota*10)  
)
func main() {
	fmt.Println(t1)
	fmt.Println(t2)
	fmt.Println(t3)
	fmt.Println(a1)
	fmt.Println(a2)
	fmt.Println(a3)
	fmt.Println(a4)

	fmt.Println(KB)
	fmt.Println(MB)
}